Listing adding machine



June 8, 1943. L. P. CROSMAN LISTING ADDING MACHINE Filed Jan. 31, 1940 3 Sheets-Sheet 1 S me/Wm lemma P Crzosmm June 8,1943. 1. P. CROSMAN 2,321,013

LISTING ADDING MACHINE Filed Jan. 31, 1.940 3 Sheets-Sheet 2 Lemma P. Caosmm eiw, 01mm rim June 8, 1943. L. P. cRosMAN 2 LISTING ADDING MACHINE Filed Jan. 51, 1940 3 Sheets-Sheet 3 Eva/ um LOQIHG P Cszosmau,

' (Qua/Mom vifm Patented June 8, 1943 I UNITED STATES PATENT OFFICE LISTING ADDING MACHINE Loring Pickering Crosman, Maplewood, N. J.,- assignor to Monroe Calculating Machine Company, Orange, N. J., acorporation of Delaware Application January 31, 19M), Serial No. 316,667

Claims. (Cl. 235-60) The invention relates to listing adding machines and particularly to total and grand total printing control mechanism therefor, embodying certain improvements upon the machine disclosed in the patent to Crosman, No. 2,048,842, granted July 28, 1936, an object of the invention being to reduce the possibility of the operator making mistakes in grand total taking work. Another object is to adapt the same machine for use as a duplex lister, namely one in which items may be registered in either of two accumulators.

The invention consists in the novel construction and combinations of parts as hereinafter set forth in the claims.

In the accompanying drawings,

Figure 1 is a right side elevation of an adding listing machine, having the invention applied thereto, the parts being in normal position and parts of the machine being removed.

Figure 2 is a view similar thereto, the parts being in the position taken upon manipulation of the total taking key.

Figure 3 is a view similar thereto with the grand total control lever in manipulated position.

Figure 4-15 a view similar to Figure 1, showing the yieldable tooth moved upwardly in the depression of said tooth and the detent lever as a unit by the full stroke rock arm.

Figure 5 is a view similar to Figure 2 with the parts conditioned for duplex operation.

Figure 6 is a detail right side elevation of the accumulator control mechanism.

In these drawings, the invention is shown as applied to a Monroe listingadding machine, such as disclosed in saidCrosman patent.

General operation For each denominational order, the machine is provided with a three-armed actuator lever in (Fig. '7), these levers being loosely mounted upon a shaft 608. The forward arm of each lever 5H! terminates in a segmental registering rack, the rearward arm has a lister type bar 5i i pivoted thereto, and the upper arm has pivotal connection with a differentially movable toothed member or stop bar 6l5, cooperating with a column of digital keys 2l5, one column for each said order.

The digital keys 2 I5 which have been depressed to represent a value, are latched in depressed position by slide plates, the lower ends of the key stems lying in the paths of movement of the related teeth of said bars H5, thereby allowing said bars to advance a distance corresponding to the values of said keys, upon operation of the machine. Depression of a digital key will also remove acolumn latch 2 from the path of movement of its related bar 5 l5, these latches preventing movement of a stop bar H5 and a lever SID in any column in which no digital key has been depressed.

A rock shaft is provided with cam means for governing the movement of a spring tensioned rocker frame 5|, mounted upon a shaft 508, said frame carrying a series of dogs 5H normally engaged by studs 559 of the levers 5H3. As shaft 31 is rocked forwardly, the frame SIS will be rocked, and any of the levers 5 i 0 which have been released by the depression of digital keys US will be allowed to rotate under the influence of their springs'683 until they are stopped by the related teeth of the bars 5|5 contacting the stems of the keys. Upon rearward movement of the shaft 3M,

. the dogs 5|] will restore the levers Gill tonormal position.

'Ihis excursion of the levers Gil serves to register amounts set in the keyboard upon one or the other of accumulators 413 and to set up a similar amount on the printing line of the type bars.

The accumulators are engaged with the racks by means of cams 453, 455, fast upon the respective accumulator shafts, in cooperation with cams 452 mounted upon the frame of the machine, en-

gagement of a cam 45! with a cam 453 serving to move the shaft 403 of an accumulator 413 along suitable guide slots of the framing against the tension of suitable springs to eifect the aforesaid meshing. The cams 453, 455, are adjusted through the shafts 403 todetermine whether a given accumulator shall be operative or remain idle. The cams 452 form part of rocking plates M9, 42!, having a pin and slot connection with each other at 11, the plate 9 being connected by means of a link 32! and arm 322 with a rocker 325. The rocker 325' is controlled by rock shaft Sill, which is moved in time with the racks 5H and serves to determine whether the active accumulator shall be operated additively or subtractively. The control is effected in well known manner as disclosed in said Crosman patent by means of cam arms iii and 32! fast to shaft Slll and forward and rear cam followers pivotally connected to the rocker 325.

Motor drive means The shaft 30! is oscillated by means of an electric motor I00, connected through gearing iOi (Fig. 8), and clutch means with a crank member I05, the latter being connected to said arm Iii by means of a connecting rod "8.. Clutch lever I66 is provided with an insulated roller adapted to close certain contact members after lever I66 is moved out of restraining engagement with the spring element of said clutch. These contact members constitute circuit breaking devices in the electrical wiring of the motor I66. Spring Ill tends to pull lever I66 away from the clutch, said lever being normally held in position torender said clutch ineffective, by means of a latch 2. To establish the drive, latch H2 being released as will be described, clutch lever I66 will be moved by its spring to render said clutch effective and said contact members will be engaged to thereby start the motor. Latch H2 being released will return under spring tension to latching position, and toward the end of the cycle of motor operation an arm N5 of crank member I65 will contact a tooth H6 of clutch lever I66 and thereby force said lever back to latching position and bring the lower end of said lever into the path of movement of a member of said clutch to render the latter again ineffective.

Total printing Totals are printed as usual in machinesof this type by engaging one of the accumulators with the racks H6 and allowing these racks to move subtractively until the accumulator'is stopped at zero, thus entering the total on the racks and thereby on the type bars of the machine, the printing hammers being then released, the accumulators disengaged from the racks and the parts restored to normal position.

A total cleared from the upper accumulator 413 is transferred to the lower accumulator as disclosed in said Crosman patent.

The machine is set for reverse or subtractive operation by a total key 218 provided with a shoulder engaging a pin 352 fixed in a plate 326, pivoted at 326', manipulation of the total key moving the plate 326 clockwise about said pivot (Fig. 6) to disable the rear cam follower, to withdraw a shoulder of the plate from the rear face of a pin in the upper end of the forward cam follower, and to bring a second shoulder of said plate in front of said pin. In this position of the parts the cam arm 326 will rock the forward cam follower idly about its pivot during the subtractive stroke of the racks 6| 6, leaving the cams 452 in the position shown in Fig. 6, wherein it will be noted that the upper accumulator 413 is held up against the racks 6I6, while the lower accumulator remains in its forward or idle position. At the end of the forward stroke of the racks, the forward cam follower will escape from the rear end of cam 326, so that upon the return stroke of the parts this cam follower, held by the shoulder of the plate 326, will move the rocker 325 clockwise and thereby move the plates 9, 42| so that the upper cam 452 is moved downwardly out of contact with the cam 453, allowing the upper accumulator to move out of meshing engagement with the racks during the additive stroke.

Depression of the total taking key 218 (Figs. 6 and 9) will not only trip the column latches 2 (Fig. 7), through pin 263 and clearout bail 221, but will also trip a latch 626, through operation of crank arms 236 and 229 of shaft 266 andof lever 62! pivotally connected to said latch. The lath 626 normally engages a lug 621 of total segment 6| 8, thereby preventing movement of said segment under influence of its spring 68!. Upon tripping of said latch 626, total segment 6l8 will operate a shaft 561 having a helically arranged row of pins 65! acting to trip the latching dogs 6I1 mounted upon said frame 6l6 successively from right to left of the machine, releasir; certain stop members 6l3, so that the latter will fall into the paths of movement of the zero stops 451 of the accumulator wheels and also releasing the studs 659 of the actuator levers 6l6, as disclosed 'in the Gardner Patent No. 1,867,062. When this zeroizing operation has progressed to the left hand side of the machine, a rearwardly extending arm of total segment GM will contact a projection of rod I36 (Fig. 8), having connection with trigger I 3| to move said rod downwardly, thereby releasing the latch N2 of clutch lever I66, whereby the motor clutch is rendered effective and the cycle of motor. operation is started. The machine being thus started in cperation, the oscillatory frame 6I6 will carry the dogs 6l1 downwardly and said dogs will snap under the studs 659 of the actuator levers H6. The printing hammers 1l5 will now be tripped in known manner and upon rearward movement of said frame, said actuator levers 6I6 will be restored to normal position.

The lower accumulator 413 is thrown into mesh with the racks 6I6 during the additive stroke thereof by the following means:

Upon manipulation of the total key 216, a pin 13 fixed in the key lever will engage a pawl 12 mounted upon an arm 16, fixed upon a shaft 62. A second arm- 1| is also fast upon shaft 62, this arm being connected by a link 14 with a latch 15. Latch 15 is pivoted upon a plate 16 which is in turn pivoted concentrically with the plate 6 and is' provided with a cam'face 19. Manipulation of key 218 will therefore rock shaft 62 clockwise (Fig. 6) and arm 1| will act to reengage the latch 15 with the pin 11 of the plate 9, holding the plate M9 and the plate 16 in fixed relation for operation in'unison. Thus at the beginning of the additive stroke of the racks M6, the upward'rocklng movement of the plate 9 eflected by readjustment of rocker 325, will bring the cam face 19 in contact with a collar 86 of the lower shaft 463, and will therefore force the lower accumulator into mesh with the racks 6l6, whereby the total which has been transferred to the Grand total printing At the end of a series of operations, it will be desired to print the grand total which has been registered in the lower accumulator, for which purpose the upper accumulator is moved to inactive position, the lower accumulator is thrown into mesh with-the racks H6 at the beginning of the operation, and'the transfer total mechanism is disabled, the grand total being then printed and the lower accumulator cleared in the usual manner.

It is designed that a grand total shall be taken upon manipulation of the total key 216, in cooperation with manipulation of a grand total control lever, the present invention embodying certain improvements upon the disclosure of said Crosman patent'including means for locking the grand total control lever in its normal position, for releasing the locking means upon manipulation of the total'taking key, for latching the grand total control lever in manipulated position and for releasing the latching means and restoring the parts to'normal position as will now be described.

Upon manipulation of the total taking key 214, a machine cycle willbe initiated as aforesaid and the shaft 82 and the transfer total control lever 44 fast thereon will be rocked clockwise (Fig. 2) as described in said Crosman patent, and the tail arm 88 of said lever engaging the forward arm of a lock lever 2 will raise the rearward arm of said lock lever from engagement with a stud 3 of the grand total control lever 4, a spring-urged latch 8 then engaging said lock lever and holding it in released position, so that the grand total control lever will now be freely manipulable. The lock lever 2 is fulcrumed at 8' to the stationary framing and is provided with a retracting spring 1.

Assuming a grand total is now to be taken, the grand total control lever, which is fulcrumed at 4 to the framing, is manipulated to grand total position (Fig. 3) the stud 3 thereof being moved forwardly. A spring-urged latch lever 8, fulcrumed also at 8, is provided with an extension or hump III the upper edge ll of which normally contacts the stud I, and said stud being so moved forwardly, latch lever 9 will rise under the urge of its spring ll until the inclined forward edge or shoulder if of said hump contacts the rear edge of said stud. Said shoulder l2 being inclined and the upward pull of the spring Ii 1 of the latch lever being stronger than the forward pull of the retracting spring ii of the grand total control lever, the latter is now yieldably retained in grand total taking position.

The grand total control lever being so manipulated, the total transfer control lever 88 will be rocked counterclockwise and the total transfer mechanism will become disabled and will not be operated by the total key in taking a grand total, as described in said Crosman patent.

Manipulation of grand total control lever 4 will also effect the proper setting of the cams 453, 455 of the upper and lower accumulators by means similar to that disclosedin said Crosman patent and including the aforesaid stud 3 of lever 4 engaging cam slot 6' of rack lever 8' fulcrumed at 9"to the framing of the machine and having a segmental rack 8" engaging pinions 414 fixed upon shafts which have universal joint connections with the accumulator shafts 403. Manipulation of lever 4 will thus raise rack 8" and effect rotation of the pinions 414, (Figs. 2 and 3) and one'third rotation in the opposite direction of said cams 453, 455.

The total taking key and the grand total control lever being both manipulated as stated, during the ensuing machine cycle, the full stroke rock arm l3 fast to oscillatory main shaft 3M moving forwardly, a yieldable tooth I4 pivoted at I5 to the rear end of detent lever 9 being engaged by a stud l6 of said rock arm is depressed against the tension of its spring il, said tooth rising to normal position in the stud's path after the stud has passed by. Near the end of the forward movement of said rock arm, the rounded free end I8 thereof contacts latch 5 and releases said latch from its engagement with lock lever 2, whereupon said lock lever will be partially retracted by its spring and come tempoarily to rest upon the stud 3 of the grand total control lever, which latter is in its manipulated position, said lock lever having at this time no restraining action thereon. The rock arm I3 being now reversely oscillated in the completion of the machine cycle, stud l6 thereof engages yieldable tooth i4 and thereby depresses said tooth and the latch lever I as unit until the stud I of the grand total control lever is-no longer located against the inclined forward edge or shoulder 12 of the hump of the latch lever, whereupon the grand total control lever is retracted by its spring to normal position, the lock lever 2 being then further retracted by its spring to normal position in front of said stud so that manipulation of the grand total control lever is prevented until another group total shall have been taken.

Yieldable tooth l4, which is moved upwardly against the tension of its spring ll in the aforesaid depression of the tooth and the latch lever as a unit (Fig. 5) remains in contact with the stud iiof said rock arm until a following machine cycle, when said rock arm moving forwardly, said tooth is retracted by its spring to normal position and the latch lever s is retracted by its spring to normal position.

Thus it is impossible to manipulate the grand total control lever 4 to grand total taking position when using the machine as a grand total taking machine, until immediately. following the taking of a group total, which latter involves the clearing of the item or listing accumulator.

When the grand total control lever is manipulated to grand total taking position, it is yieldably retained therein as explained, so that if the operator should change her mind said lever may be manipulated back to normal position. The next stroke of the machine in a machine cycle, unless in another group total cycle, will result in the locking of the grand total control. lever in its normal position, which lock will continue until released in the following action of the machine in taking a group total. If the grand total control lever should be left in grand total taking position and the grand total taken, it will be returned automatically to normal position and lated to the position shown in Figure 5, to bring a shoulder 20 thereof beneath the free end lu 2' of lock lever 2 and to bring the lower end 2| thereof immediately over and in contact with the upper lug I4 at the free end of yieldable tooth l4, thereby preventing lock lever 2 from being returned to normal locking position by its spring and preventing said yieldable tooth from rising into the path of the stud it of rock arm II in the oscillation of the latter during the machine cycle. The grand total control lever being now manipulated to duplex position (the same as grand total taking position) in order to disable the item or listing accumulator, item.

registrations will be effected in the grand total accumulator during the machine cycle.

To recondition the machine for normal functioning as a grand total taking machine, the operator has only to manipulate the duplex lever I! to normal position and depress the motor operation key for one cycle of the machine, not

a total taking cycle, which will result in the lock lever 2 and the latch lever B being returned to normal position and also in the automatic return of the grand total control lever to normal position should the operator have not manually returned it. Before using the machine for takin its duplex positions by suitable notches in the keyboard (not shown).

In this machine, any group totals taken with the grand total control lever in its normal position,, wherein the transfer total mechanism is not disabled, will be transferred automatically to the grand total accumulator and will show up with any group totals taken with the machine cumulator, and means for taking totals and grand totals including a total taking key, a grand total control device, means for rendering the item totalizer inactive upon manipulation of said grand total control device, and power driven means; of means for locking the grand total control device in normal position, means for releasing the locking means. upon manipulation of the total taking key, means for latching the grand total control device in manipulated position, means controlled by said power driven means for releasing said latching means and means including a manipulable device for maintaining the locking inuse as a duplex lister, in the following taking of a grand total.

I claim:

1. In a listing adding machine, the combination with an item accumulator, a grand total accumulator, and means for taking totals and grand totals including a total taking key, a grand total control device, means for rendering the item totalizer inactive upon manipulation of said grand total control device, and power drivenmeans; of means controlled by said power driven means for locking the grand total control device in normal position, means controlled bythe total taking key for releasing the locking means, and means including a manipulable device for maintaining the locking means in released position, whereby-item registrations may be alternatively effected in the grand total accumulator.

2. In a listing adding machine, the combination with an item accumulator, a grand total accumulator, and means for taking totals and grand totals including a total taking key, a grand total control device, means for rendering the item totalizer inactive upon manipulation of said grand total control device, and power, driven means: of means for locking the grand total control device in normal position, means for releasing the locking means upon manipulation of the total taking key, means for latching the grand total control device in manipulated position and means controlled by said power driven means for releasing said latching means. V

3. In a listing adding machine, the combination with an item accumulator, a grand totalacmeans in released position and for disabling the latch releasing means, whereby item registrations may be alternatively effected in the grand total accumulator.

4. In a listing adding machine, the combination with an item accumulator, a grand total accumulator, and means for taking totals and grand totals including a total taking key, a grand total control device, means for rendering the item totalizer inactive upon manipulation of the grand total control device, and power driven means; of means for locking the grand total control device-in normal position, means for releasing the locking means upon manipulation of the total taking key, means for latching the lockingmeans in released position, means for latching the grand total control device in manipulated position, and means controlled by the power driven means for releasing both latching means.

5. In a listing adding machine, the combination with an item accumulator, a grand total accumulator, and means for taking totals and grand totals including a total taking key, a grand total control device, means for rendering the item totalizer inactive upon manipulation of the grand total control device, and power driven means; of means for locking the grand total control device in normal position, means for releasing the locking means upon manipulation of the total taking key, means for latching the locking means in released position, means for latching the grand total control device in manipulated position,

means controlled by the power driven means for releasing both latching means, and means including a manipulative device for maintaining the locking means in released position and for disabling the means for releasing the latching means for the grand total control device, whereby item registrations may be alternatively eifected in the grand total accumulator.

LORING PICKERING CROSMAN. 

